package com.lanou3g.code0516;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

/**
 * If there are no bugs, it was created by Chen FengYao on 2018/5/16;
 * Otherwise, I don't know who created it either
 */

@WebServlet(name = "LoginServlet",urlPatterns = "/login")
public class LoginServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request,
                          HttpServletResponse response) throws ServletException, IOException {
        // TODO 获取数据
        String username = request.getParameter("username");

        String msg = "";
        // 校验
        if ("root".equals(username)){
            // 登录成功
            msg = "登录成功";
            // 把用户信息存到session中去
            // 获取session对象
            HttpSession session = request.getSession();
            // 把用户信息存储到session中,注意:晚上可以把User对象,直接
            // 存入session
            session.setAttribute("username",username);
            session.setAttribute("word",
                    "人生只有走出来的美丽");

        } else {
            // 登录失败
            msg = "登录失败";
        }
        request.setAttribute("msg",msg);
        request.getRequestDispatcher("/user/msg.jsp")
                .forward(request,response);
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        this.doPost(request, response);
    }
}
